posted 01 August 2000 02:42 PM
I’m new to the Sonata, from a dinghy racing background. 2 questions, What does 35 on the Loos tension guage mean in Kilogrammes? (I have a Superspar tension guage and wonder if they are the same)and why no Cunningham downhaul on the Main?
08 August 2000 08:50 PM
Hopefully some helpful soul who owns a Loos gauge will reply to your query but if they don’t then you could try emailing the manufacturer at email@example.com (the funny name is because their rigging division is in Naples Florida). The other way to do it is to find a properly set-up Sonata and calibrate your own gauge.
I thought most people did have a Cunningham downhaul – anybody got any comments?
01 September 2000 10:59 AM
The 35 on the loos gauge is an absolute number and only applies to 4mm rigging. If like me your boat has a mixture of 4 and 5mm rigging you will find that you need two different Loos gauges (big bucks) and then all you need to do is read across the guage and convert the number 35 to a tension in if I remember correctly kilogrammmes so that you can get all the tensions even. Hope this helps.
04 September 2000 08:47 AM
I’ve just got my hands on a Loos Model A that has a calibration scale stuck onto it. 35 corresponds to 230 pounds tension with 5/32 inch wire. This is the bottom of the scale for this size of wire. 38 is 300 lb and 40 is 340 lb. The scale goes up to 48 which corresponds to 920 lb. It’s an American piece of kit, hence the non-metric measurements. 5/32 inch is pretty close to 4mm.
11 September 2000 09:55 PM
The following message is forwarded from Steve Goacher:
We recommend cap shrouds and lowers set at 35 on a Loos gauge ( equivalent to 30 on a small Superspar gauge) for 4mm 1 x 19 wire.
If 4mm dyform wire is used the lower stretch means that the rig behaves differently. I would recommend slackening off the cap shrouds by a unit or so to allow the topmast to fall away a little in strong breeze.
I prefer 4mm 1 x 19 and would recommend it for any new rigging on the Sonata.
I hesitate at recommending actual shroud tensions as although the gauges are a good way to repeat a setting, different manufacturers gauges will give a different absolute reading.
Hope this helps.